Types of tests

- [Instructor] One common way to think about testing is the testing pyramid. It talks about three types of tests. Unit tests, integration tests and end to end tests. The testing pyramid is a visual way to represent the ideal distribution of tests. We should test the fundamental building blocks with unit tests which makes up the bulk of our tests. Then we should verify how the units interact with each other with integration tests.

Finally we should have a small number of end to end tests to make sure the whole system works. This is all fine and well, but it does not map very well into Android. In particular a lot of our code depends on the Android framework and it is not obvious how to make stand alone units for unit testing. Next we will explore the relationship between Java and Android, and how to petition our tests into local tests, and on device tests.